docs: def check_id_has_no_blanks(self, ds):
          '''
          Check if there are blanks in the id field
  
          :param netCDF4.Dataset ds: An open netCDF dataset
          '''
          if not hasattr(ds, u'id'):
              return
          if ' ' in getattr(ds, u'id'):
              return Result(BaseCheck.MEDIUM, False, 'no_blanks_in_id',
                            msgs=[u'There should be no blanks in the id field'])
          else:
              return Result(BaseCheck.MEDIUM, True, 'no_blanks_in_id', msgs=[])